A big rig truck struck an overpass in Carson just before noon on Wednesday, snarling traffic on the 110 Freeway.

The wooden crates on the back of the truck were damaged in the incident, according to aerial views from Sky5 taken just after 1 p.m.

As a result of the crash, two lanes of the northbound 110 Freeway were closed near 223rd Street, and a SigAlert is in effect, the CHP said.

The Nos. 3 and 4 lanes are expected to be closed for about two hours.

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